Perhaps you should try some spelling variations:
"phung thoi quyen van. hoc cong coc mo" » "phung thi quyen van. hoc cong coc mo", "nhung thoi quyen van. hoc cong coc mo", "phuong troi quyen van. hoc cong coc mo", "phung thoi quen van. hoc cong coc mo", "phung thoi nguyen van. hoc cong coc mo", "phung thuoc quyen van. hoc cong coc mo", "phung thoi quyet van. hoc cong coc mo", "phung thoi huyen van. hoc cong coc mo", "phung thoi quyen van. hoc co coc mo", "phung thoi quyen van. cac cong coc mo", "phung thoi quyen van. hoc dung coc mo", "phung thoi quyen van. hoc cong cuoc mo", "phung thoi quyen van. hoc cong cac mo", "phung thoi quyen van. hoc cong co mo", "phung thoi quyen van. hoc cong uoc mo", "phung thoi quyen van. hoc cong hoc mo"
"nhung thi luan van. hoc dan hoc mon" » "nhung thoi luan van. hoc dan hoc mon", "phung thi luan van. hoc dan hoc mon", "nhung tri luan van. hoc dan hoc mon", "nhung thi lan van. hoc dan hoc mon", "nhung thi xuan van. hoc dan hoc mon", "nhung thi loan van. hoc dan hoc mon", "nhung thi luan van. hoc van hoc mon", "nhung thi luan van. hoc dan toc mon", "nhung thi luan van. hoc dai hoc mon", "nhung thi luan van. hoc dan hoc moi", "nhung thi luan van. hoc dan hoc mot", "nhung thi luan van. hoc dan hoc bong"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("phung thoi quyen van. hoc cong coc mo") or ("nhung thi luan van. hoc dan hoc mon"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("phung thoi quyen van. hoc cong coc mo") OR ("nhung thi luan van. hoc dan hoc mon")).
• Removing quotes may allow a broader search: (( phung thoi quyen van. hoc cong coc mo ) or ( nhung thi luan van. hoc dan hoc mon )).
• Adding a wildcard symbol may retrieve word variants: (("phung thoi quyen van. hoc cong coc mo") or ("nhung thi luan van. hoc dan hoc mon"))*.